Evaluation of Inoculation Techniques for Fusarium Ear Rot and Fumonisin Contamination of Corn

Plant Disease
M J ClementsD G White

Abstract

Fumonisins have been associated with potentially serious toxicoses of animals and humans. Prior to initiating a corn (Zea mays) breeding program for resistance to these mycotoxins, an efficient inoculation technique must be developed. Four inoculation techniques were evaluated on 14 commercial corn hybrids in Urbana, IL in 1999 and 2000. The techniques were: injection of inoculum through the ear husk leaves at R2 (blister); silks sprayed with inoculum at R2 and covered with a shoot bag until harvest; silks sprayed with inoculum at R2, covered with a shoot bag, reinoculated 1 week thereafter, and covered with a shoot bag until harvest; and insertion of six Fusarium-colonized toothpicks into the silk channel at R2. Only injection of inoculum through the husk leaves significantly increased the concentration of fumonisin in grain and severity of Fusarium ear rot compared with a control. This technique effectively differentiated hybrids previously identified as resistant or susceptible to Fusarium ear rot. The rank order of hybrids inoculated with this technique did not significantly change in the 2 years of this study. This technique is suitable for efficiently evaluating a large number of corn genotypes for resistance to Fusarium ...Continue Reading

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Citations

Aug 25, 2012·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·A WaskiewiczW Wakulinski
Sep 17, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Yipu LiMingliang Xu
Jul 22, 2018·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Nestor Ponce-GarcíaSilverio Garcia-Lara
May 6, 2003·Annual Review of Phytopathology·Gary P Munkvold
Jul 11, 2013·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Marcin BryłaJanusz Sękul
Oct 28, 2017·Frontiers in Plant Science·Alessandra LanubileAdriano Marocco
Jan 22, 2017·BMC Plant Biology·Valentina MaschiettoAlessandra Lanubile
Jun 19, 2016·BMC Genetics·Jhonathan Pedroso Rigal Dos SantosMarcio Balestre
Nov 19, 2020·Journal of Fungi·Monika UrbaniakŁukasz Stępień

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